What Is Pseudonymisation?
Pseudonymisation is replacing identifying details with a pseudonym so data cannot be attributed to a person without separately held additional information.
Pseudonymisation — replacing identifying details with a pseudonym so data cannot be attributed to a person without separately held additional information.
Pseudonymisation (GDPR Article 4(5)) is a safeguard, not an exemption — the data is still personal data and the rules still apply, because the link back to the individual exists, just held separately. It is a recommended risk-reduction measure for training and analysis, but it is weaker protection than true anonymisation.
Source: GDPR, Article 4(5)
Plain-language explanation
Pseudonymisation (GDPR Article 4(5)) is a safeguard, not an exemption — the data is still personal data and the rules still apply, because the link back to the individual exists, just held separately. It is a recommended risk-reduction measure for training and analysis, but it is weaker protection than true anonymisation.
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